package t20211226;

import java.util.Map;

/**
 * @Author: DengJia
 * @Date: 2021/12/26 12:45
 * @Description:
 */

public class EnvironmentVariables {
    public static void main(String[] args) {
        for (Map.Entry<String, String> entry : System.getenv().entrySet()) {
            System.out.println(entry.getKey() + " --> " + entry.getValue());
        }

    }
}
